Homologous, Analogous + Vestigial structures

Front

Structures that are inherited from a common ancestor are homologous.

Back

True

Front

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

Back

They have a common ancestor

Front

Bird wings and butterfly wings are an example of

Back

Analogous structure

Front

Shark fins and dolphin fins are examples of analogous structures.

Back

True

Front

Do analogous structures show common ancestry?

Back

False

Front

Evolved from the same ancestor, but have different functions

Back

Homologous structures

Front

Evolved from different ancestors, but due to living in similar environments have a similar function.

Back

Analogous structures

Front

Penguin flipper and fish fin

Back

Analogous

Front

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

Back

They have a common ancestor

Front

An anatomical feature that no longer seems to have a purpose in the current form of an organism

Back

Vestigial structure